Thanks pix !! I’m nt being able to visualize abt d configuration problem. What type of config problem can it be, if u can name few. It’s a 2 trx cell with around 15 erl traffic. Means both trxs have almost similar attempt. So if trx is faulty or one frequency is interferred, no. of drop should b high irrespective of BB hopping. Rather no. of drop should b hogher whn disabled. I didn’t send any drive test team so can’t check SI13.Please b informed tht it’s a huawei system. Anyway thanks again fr ur reply. Kindly don’t delete this issue from ur brain.